Which one of the following statements expresses a true proportion? a) 2: 1=1: 2 b) 54: 9=6: 3 c) 3: 4=9: 12 d) 7: 9=8: 9

Aschool puts on a play. the play costs $1,200 in expenses. the students charge $4.00 for tickets. there will be one performance of the play in an auditorium that seats 500 people. what is the domain of the function that shows the profit as a function of the number of tickets sold?  

The holiday party will cost $160 if 8 people attend. if there are 40 people who attend the party, how much will the holiday party cost

The number of 8th graders who responded to a poll of 6th grade and 8 th graders was one fourtg of the number of 6th graders whi responded if a total of 100 students responddd to the poll how many of the students responded were 6 th graders